diff --git a/rebar.config b/rebar.config
index 0b19594..e33e8b4 100644
--- a/rebar.config
+++ b/rebar.config
@@ -1,5 +1,6 @@
+%% Cowlib is only used to pull gun, which is using old rebar file
 {deps,
- [{cowlib, {git, "https://github.com/ninenines/cowlib", {tag, "2.7.0"}}},
+ [{cowlib, {git, "https://github.com/ninenines/cowlib", {tag, "2.8.0"}}},
   {gun, {git, "https://github.com/emqx/gun", {tag, "1.3.4"}}},
   {gproc, {git, "https://github.com/uwiger/gproc", {tag, "0.8.0"}}}
  ]}.